1924–25 Southern Football League

The 1924–25 season was the 27th in the history of the Southern League. As in the prevoius season, the league was split into Eastern and Western Divisions.[1]Southampton II won the Eastern Division and Swansea Town II won the Western Division. Southampton were declared Southern League champions after defeating Swansea 2–1 in a championship play-off.[2]

Mid Rhondda United, who finished fifth in the Western Division, were the only club to apply to join the Football League, but were unsuccessful in the vote.[3] Seven clubs left the league at the end of the season.